This adds the remaining missing coverage on the swh deposit reschedule cli.
This also clarifies the messages in the runtime code, this serves multiple purposes:
- 1. message were not always clear
- 2. allows to use f-string which clarifies technically the code
- 3. ultimately, the coverage is then shown by jenkins in this very diff...
This cli allows to reschedule deposit ingestions which failed or got missed for some reason.